CN220582217U - Solid-state hydrogen storage tank with heat exchange of finger-shaped pipes - Google Patents
Solid-state hydrogen storage tank with heat exchange of finger-shaped pipes Download PDFInfo
- Publication number
- CN220582217U CN220582217U CN202320383279.0U CN202320383279U CN220582217U CN 220582217 U CN220582217 U CN 220582217U CN 202320383279 U CN202320383279 U CN 202320383279U CN 220582217 U CN220582217 U CN 220582217U
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- Prior art keywords
- heat exchange
- hydrogen storage
- tube
- finger
- tank
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- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 100
- 239000001257 hydrogen Substances 0.000 title claims abstract description 100
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 100
- 239000000956 alloy Substances 0.000 claims abstract description 30
- 239000007787 solid Substances 0.000 claims abstract description 25
- 239000007789 gas Substances 0.000 claims abstract description 23
- 239000011232 storage material Substances 0.000 claims abstract description 7
- 239000007769 metal material Substances 0.000 claims description 11
- 230000003014 reinforcing effect Effects 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims description 3
- 238000010521 absorption reaction Methods 0.000 abstract description 6
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- 230000009471 action Effects 0.000 abstract description 2
- 229910045601 alloy Inorganic materials 0.000 description 7
- 238000000034 method Methods 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- 238000003795 desorption Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/32—Hydrogen storage
Landscapes
- Filling Or Discharging Of Gas Storage Vessels (AREA)
- Hydrogen, Water And Hydrids (AREA)
Abstract
The utility model discloses a solid-state hydrogen storage tank with heat exchange by a finger-shaped pipe, which comprises: tank, gas distributor and finger-shaped tube heat exchanger. The utility model obviously improves the heat exchange efficiency of the solid hydrogen storage material in the solid hydrogen storage tank, the temperature difference of the finger-shaped heat exchange tubes in the length direction of the heat exchange tubes is smaller under the combined action of the inner tube and the outer tube, and the heat exchange condition in the tank is uniform due to the arrangement of a plurality of finger-shaped tubes in parallel connection; the flow guiding spiral between the inner pipe and the outer pipe improves the flow speed and the Reynolds coefficient of the heat exchange medium and improves the heat exchange efficiency; the structure and arrangement of the gas distributor ensure that the hydrogen and the hydrogen storage alloy material are in uniform contact, so that the uniformity of heat release of the hydrogen absorption and release reaction is effectively ensured, the heat management efficiency is improved, and the problem of poor heat management efficiency of the existing hydrogen storage tank is solved.
Description
Technical Field
The utility model relates to the technical field of hydrogen storage, in particular to a solid-state hydrogen storage tank.
Background
Currently, three types of hydrogen storage methods are put into practical use: gaseous hydrogen storage, liquid hydrogen storage, and solid hydrogen storage based on metallic hydrogen storage alloys. Compared with other hydrogen storage modes, the solid-state hydrogen storage technology has the advantages of high hydrogen storage density, low pressure, good safety, high hydrogen purity and the like, and is an important direction of the development of the hydrogen storage technology. The current solid hydrogen storage container mainly comprises a metal container body, a hydrogen storage alloy material, a heat exchange structure, an air duct and the like.
Because the thermodynamic property of the hydrogen storage alloy is poor, a great amount of heat is released and absorbed along with the proceeding of the hydrogen absorption and desorption reaction of the alloy material in the container, and the volume of the hydrogen storage alloy is expanded and contracted along with the proceeding of repeated hydrogen absorption and desorption, the alloy material is pulverized to a certain extent, the overall heat conduction property of the alloy material is also reduced, and the utilization rate of the hydrogen storage alloy material is reduced. The gradient change of the internal temperature field can also influence the hydrogen absorption and desorption performance of the alloy in the container. Therefore, the improvement of the heat transfer performance of the inside of the hydrogen storage alloy container through the optimized structural design is the key for improving the hydrogen charging and discharging performance of the hydrogen storage device.
The volume of the hydrogen storage alloy material after hydrogen filling can generate certain expansion, and larger mechanical stress is directly generated on the hydrogen storage volume and the heat exchange structure, and experiments prove that the volume expansion of the conventional hydrogen storage alloy material after hydrogen filling is about 20% -25%, and the generated stress can generate irreversible deformation and even fracture on the structure of the hydrogen storage device. Therefore, by optimizing the structural design, the uniformity of the hydrogen charging and discharging speed inside the hydrogen storage alloy container and the structural strength of the heat exchange structure are improved, and the method is a key for ensuring the safe use of the solid hydrogen storage tank and prolonging the service life.
Disclosure of Invention
The utility model aims to provide a solid-state hydrogen storage tank with heat exchange by a finger-shaped pipe, which improves the heat management efficiency in the hydrogen charging and discharging process, ensures the safe use of the solid-state hydrogen storage tank and prolongs the service life.
In order to achieve the above object, the present utility model provides a solid hydrogen storage tank for heat exchange with a finger-shaped pipe, comprising:
tank body: the tank body is provided with a hydrogen storage metal material filling port (3);
gas distributor (4): the gas distributor (4) is arranged in the tank body and is provided with gas inlets and outlets (16).
The tank body comprises: tank wall one (5), tank wall two (14), tank wall three (13), end cover one (1) and end cover two (12); the first end cover (1) and the second end cover (12) are arranged at two ends of the tank body, the hydrogen storage metal material filling opening (3) is arranged on the first end cover (1), a threaded plug (2) is arranged on the first end cover (1), and the threaded plug (2) is in threaded connection with the hydrogen storage metal material filling opening (3);
finger tube heat exchanger: the finger-shaped pipe heat exchanger is arranged in the tank body and comprises a finger-shaped heat exchange pipe (6), a heat exchange medium inlet (11) and a heat exchange medium outlet (9).
The tank body further comprises: an inner tube plate (8) and an outer tube plate (10); the outer tube plate (10), the end cover II (12) and the tank wall III (13) form a cavity which is used as a heat exchange medium inlet tube box and provided with a heat exchange medium inlet (11); the inner tube plate (8), the outer tube plate (10) and the second tank wall (14) form a cavity, and the cavity is used as a heat exchange medium outlet pipe box, and a heat exchange medium outlet (9) is formed in the heat exchange medium outlet pipe box.
The first end cover (1), the first tank wall (5) and the inner pipe plate (8) form a solid hydrogen storage material filling space (15).
The finger heat exchange tube (6) comprises: the inner tube (25) is arranged in the outer tube (23), the inner tube (25) is welded with the outer tube plate (10), and the end part of the inner tube (25) is open; the outer tube (23) is welded with the inner tube plate (8), and the outer tube (23) is sleeved outside the inner tube (25); the outer tube (23) is arranged in the tank body and is in direct contact with the hydrogen storage alloy material for heat exchange.
An outer tube cap (22) is welded at the end of the outer tube (23), and the outer tube cap (22) enables the end of the outer tube (23) to form a blind end.
The flow guiding spiral (24) is arranged between the inner tube (25) and the outer tube (23), and the flow guiding spiral (24) is fixed with the inner tube (25) through spot welding.
The diversion spiral (24) is made of a metal material with a round or square cross section.
The finger-shaped tube heat exchanger further comprises reinforcing ribs (7), wherein the reinforcing ribs (7) are welded on the outer tubes (23) to connect adjacent outer tubes (23) into a whole.
The gas distributor (4) consists of a central gas guide pipe (20) and a plurality of branch pipes (17) with small holes; the branch pipes (17) are provided with holes (18), and the holes (18) are uniformly distributed on the branch pipes (17); the branch pipe (17) is welded with the central air duct (20).
The end of the branch pipe (17) is welded with a branch pipe cap (19), and the end of the branch pipe (17) forms a blind end by the branch pipe cap (19).
The central air duct (20) is communicated with an air inlet and outlet (16) penetrating through the first end cover (1).
Compared with the prior art, the utility model has the beneficial effects that:
the utility model obviously improves the heat exchange efficiency of the solid hydrogen storage material in the solid hydrogen storage tank, the temperature difference of the finger-shaped heat exchange tubes in the length direction of the heat exchange tubes is smaller under the combined action of the inner tube and the outer tube, and the heat exchange condition in the tank is uniform due to the arrangement of a plurality of finger-shaped tubes in parallel connection; the flow guiding spiral between the inner pipe and the outer pipe improves the flow speed and the Reynolds coefficient of the heat exchange medium and improves the heat exchange efficiency; the structure and arrangement of the gas distributor ensure that the hydrogen and the hydrogen storage alloy material are in uniform contact, so that the uniformity of heat release of the hydrogen absorption and release reaction is effectively ensured, the heat management efficiency is improved, and the problem of poor heat management efficiency of the existing hydrogen storage tank is solved.
The finger-shaped heat exchange tube is of a sleeve structure, the guide screw is arranged between the inner tube and the outer tube, the pressure of gas in the tank born by the outer tube and the mechanical stress generated by expansion of the hydrogen storage alloy are transmitted to the inner tube with thicker wall thickness and higher strength through the guide screw, and therefore the problem of pressure variability of the thin-wall heat exchange tube with high heat transfer efficiency is solved.
Drawings
FIG. 1 is a schematic diagram of a solid-state hydrogen storage tank with heat exchange by a finger-type tube according to the present utility model.
FIG. 2 is a schematic diagram of the gas distributor structure of the solid-state hydrogen storage tank with heat exchange by the finger-shaped pipes.
FIG. 3 is a schematic diagram of the finger-shaped heat exchange tube structure of the solid hydrogen storage tank with finger-shaped tube heat exchange according to the utility model.
Reference numerals illustrate: 1. an end cover I; 2. a threaded plug; 3. a hydrogen storage metal material filling port; 4. a gas distributor; 5. a tank wall I; 6. a finger-shaped heat exchange tube; 7. reinforcing ribs; 8. an inner tube sheet; 9. a heat exchange medium outlet; 10. an outer tube plate, 11 and a heat exchange medium inlet; 12. an end cover II; 13. tank wall III; 14. a second tank wall; 15. filling the space with a solid hydrogen storage material; 16. a gas inlet and outlet; 17. A branch pipe; 18. opening holes; 19. a branch pipe cap; 20. a central airway; 21. a central airway tube cap; 22. an outer tube cap; 23. an outer tube; 24. a diversion spiral; 25. an inner tube.
Detailed Description
In order to make the objects, technical solutions and advantages of the present utility model become more apparent, the technical solutions in the embodiments of the present utility model will be described in more detail below with reference to the accompanying drawings in the embodiments of the present utility model. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of the utility model.
The embodiments described below, together with the words of orientation, are exemplary and intended to explain the utility model and should not be taken as limiting the utility model.
As shown in fig. 1, 2 and 3, in one broad embodiment of the present utility model, a solid hydrogen storage tank for heat exchange with a finger tube comprises: the tank body is provided with a hydrogen storage alloy material filling port, a hydrogen inlet and a hydrogen outlet and a heat exchange medium inlet and a heat exchange medium outlet; the finger-shaped pipe heat exchanger is arranged in the tank body and is provided with a heat exchange medium inlet and a heat exchange medium outlet; the gas distributor is arranged in the tank body and is communicated with the gas inlet and outlet. The hydrogen storage alloy material is filled in the solid hydrogen storage material filling space, and heat generated in the hydrogen filling process of the hydrogen storage alloy material passes through the finger-shaped tube heat exchanger and is taken away by a heat exchange medium flowing in the heat exchanger; the heat absorbed by the hydrogen storage alloy material in the hydrogen releasing process passes through the finger-shaped tube heat exchanger, and the heat is provided by a heat exchange medium flowing in the heat exchanger.
The jar body includes: tank wall one 5, tank wall two 14, tank wall three 13, end cover one 1 and end cover two 12; the first end cover 1 and the second end cover 12 are arranged at two ends of the tank body, the filling port 3 of the hydrogen storage alloy material is arranged on the first end cover 1, the first end cover 1 is welded with the first tank wall 5, and the second end cover 12 is welded with the third tank wall 13; the hydrogen storage alloy material is filled through the hydrogen storage alloy material filling port 3.
The jar body includes: a screw plug 2; the threaded plug 2 is arranged on the first end cover 1 and is in threaded connection with the hydrogen storage alloy material filling port 3, so that the sealing of the tank body is realized, and the disassembly is convenient.
Preferably, the tank further comprises: an inner tube sheet 8 and an outer tube sheet 10; the inner tube plate 8, the outer tube plate 10 and the tank wall two 14 form a cavity, and the cavity is used as a tube box of a heat exchange medium outlet; the outer tube plate 10, the end cover II 12 and the tank wall III 13 form a cavity, and the cavity is used as a tube box of a heat exchange medium inlet;
the tank body also comprises: a heat exchange medium inlet 11 and a heat exchange medium outlet 9; the heat exchange medium inlet 11 is arranged on the third tank wall 13, and the heat exchange medium outlet 9 is arranged on the second tank wall 14. The heat exchange medium enters the heat exchanger through a heat exchange medium inlet 11 and flows out of the heat exchanger through a heat exchange medium outlet 9.
The finger tube heat exchanger further comprises: the finger-shaped heat exchange tube 6 is arranged in the tank body, and fully exchanges heat with the hydrogen storage alloy material.
The finger heat exchange tube further comprises: an inner tube 25, an outer tube 23 and a diversion spiral 24; the inner tube 25 may have a wall thickness value that meets the strength requirements to increase the overall strength of the finger heat exchange tube; the outer tube 23 is a thin-wall heat exchange tube with high heat transfer efficiency, so that the heat resistance is reduced, and the heat exchange efficiency is improved.
The inner tube 25 is welded with the outer tube plate 10, and the inner tube 25 is arranged in the outer tube 23; the end of the inner tube 25 is open, and the inner tube 25 and the outer tube 23 are made of stainless steel or other metal materials as a baffle passage opening for heat exchange medium flowing from the inner tube 25 to a gap between the inner tube 25 and the outer tube 23.
The outer tube 23 is welded with the inner tube plate 8, and the outer tube 23 is sleeved outside the inner tube 25; the outer tube 23 is arranged in the tank body and is in direct contact heat exchange with the hydrogen storage alloy material; the end of the outer tube 23 is welded with a tube cap 22, and the tube cap 22 forms a blind end at the end of the outer tube 23 and forms a partition wall heat exchange structure with the hydrogen storage material.
A flow guiding screw 24 is arranged between the inner pipe 25 and the outer pipe 23, the flow guiding screw 24 is fixed with the inner pipe 25 by spot welding, the flow guiding screw 24 can improve the flow speed of a heat exchange medium, so that the heat exchange efficiency is improved, a certain gap can be kept between the inner pipe 25 and the outer pipe 23 all the time, and the flow guiding screw 24 can also play a role in improving the compression strength of the outer pipe 23; thereby solving the problem of easy compression and variability of the thin-wall heat exchange tube with high heat transfer efficiency. The flow-guiding spiral 24 is made of a metal material with a circular or square cross section.
The adjacent finger-shaped pipe heat exchange pipes 6 are connected by the reinforcing ribs 7, so that the structural strength of the finger-shaped heat exchange pipes 6 is improved, and meanwhile, the heat exchange area of the heat exchanger can be increased, and the heat management efficiency is improved.
The gas distributor 4 consists of a central gas guide pipe 20 and a plurality of branch pipes 17, wherein the branch pipes 17 are provided with holes 18, and the holes are uniformly distributed on the branch pipes 17, so that the circulation of hydrogen among hydrogen storage alloy materials is facilitated, and the phenomenon of nonuniform hydrogen absorption and release caused by accumulation of the hydrogen storage alloy materials is avoided.
The central air duct 20 is communicated with the air inlet and outlet 16 penetrating through the first end cover 1 and is used as a channel for hydrogen to enter and exit the tank body, and can be used as vacuumizing.
Although the present utility model has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present utility model.
Claims (10)
1. A solid state hydrogen storage tank for finger tube heat exchange, the solid state hydrogen storage tank comprising:
tank body: the tank body is provided with a hydrogen storage metal material filling port (3);
gas distributor (4): the gas distributor (4) is arranged in the tank body and is provided with gas inlets and outlets (16);
the tank body comprises: tank wall one (5), tank wall two (14), tank wall three (13), end cover one (1) and end cover two (12); the first end cover (1) and the second end cover (12) are arranged at two ends of the tank body, the hydrogen storage metal material filling opening (3) is arranged on the first end cover (1), a threaded plug (2) is arranged on the first end cover (1), and the threaded plug (2) is in threaded connection with the hydrogen storage metal material filling opening (3);
finger tube heat exchanger: the finger-shaped pipe heat exchanger is arranged in the tank body and comprises a finger-shaped heat exchange pipe (6), a heat exchange medium inlet (11) and a heat exchange medium outlet (9).
2. The solid state hydrogen storage tank of claim 1 wherein said tank further comprises: an inner tube plate (8) and an outer tube plate (10); the outer tube plate (10), the end cover II (12) and the tank wall III (13) form a cavity which is used as a heat exchange medium inlet tube box and provided with a heat exchange medium inlet (11); the inner tube plate (8), the outer tube plate (10) and the tank wall II (14) form a cavity which is used as a heat exchange medium outlet pipe box and provided with a heat exchange medium outlet (9); the first end cover (1), the first tank wall (5) and the inner pipe plate (8) form a solid hydrogen storage material filling space (15).
3. A solid state hydrogen storage tank for heat exchange with a finger tube according to claim 2, wherein the finger heat exchange tube (6) comprises: the inner tube (25) is arranged in the outer tube (23), the inner tube (25) is welded with the outer tube plate (10), and the end part of the inner tube (25) is open; the outer tube (23) is welded with the inner tube plate (8), and the outer tube (23) is sleeved outside the inner tube (25); the outer tube (23) is arranged in the tank body and is in direct contact with the hydrogen storage alloy material for heat exchange.
4. A solid state hydrogen storage tank for heat exchange with finger tubes according to claim 3, characterized in that the end of the outer tube (23) is welded with an outer tube cap (22), the outer tube cap (22) forming a blind end with the end of the outer tube (23).
5. A solid hydrogen storage tank for heat exchange with a finger tube according to claim 3, characterized in that the flow guiding spiral (24) is arranged between the inner tube (25) and the outer tube (23), and the flow guiding spiral (24) is fixed with the inner tube (25) by spot welding.
6. A finger tube heat exchange solid state hydrogen storage tank according to claim 3 or 4 wherein said flow guiding helix (24) is made of a metallic material with circular or square cross section.
7. A solid state hydrogen storage tank for heat exchange with a finger tube according to claim 3, wherein the finger tube heat exchanger further comprises a reinforcing rib (7), the reinforcing rib (7) is welded on the outer tube (23), and the adjacent outer tubes (23) are connected into a whole.
8. A finger tube heat exchange solid hydrogen storage tank according to claim 1 wherein the gas distributor (4) consists of a central gas duct (20) and a plurality of small-bore branch pipes (17); the branch pipes (17) are provided with holes (18), and the holes (18) are uniformly distributed on the branch pipes (17); the branch pipe (17) is welded with the central air duct (20).
9. A solid state hydrogen storage tank for heat exchange with finger tubes according to claim 8, wherein the end of the branch tube (17) is welded with a branch tube cap (19), the branch tube cap (19) forming a blind end of the branch tube (17).
10. A finger tube heat exchange solid state hydrogen storage tank according to claim 8 wherein said central gas conduit (20) communicates with a gas inlet (16) through said end cap (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320383279.0U CN220582217U (en) | 2023-03-03 | 2023-03-03 | Solid-state hydrogen storage tank with heat exchange of finger-shaped pipes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320383279.0U CN220582217U (en) | 2023-03-03 | 2023-03-03 | Solid-state hydrogen storage tank with heat exchange of finger-shaped pipes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220582217U true CN220582217U (en) | 2024-03-12 |
Family
ID=90121070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320383279.0U Active CN220582217U (en) | 2023-03-03 | 2023-03-03 | Solid-state hydrogen storage tank with heat exchange of finger-shaped pipes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220582217U (en) |
-
2023
- 2023-03-03 CN CN202320383279.0U patent/CN220582217U/en active Active
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